Off-topic:Windows is not usable on a CRT because 1024x768 looks terrible AND Windows is unusable with less than that resolution.
Windows XP looks fine on my 17 inch CRT and is perfectly usable at 1024x768 (which is what I use), so this is clearly subjective. Also, my CRT can display up to 1600x1200 (which is ridiculous for a 17 inch monitor).
And no, I'm not a CRT freak. CRTs offer certain functions that flat panels don't offer yet (sadly). I use mine in a dual view setup with a full HD panel, and a KVM switch so I can use the CRT for my A1200 using a VGA adapter (672x562 94 hertz interlaced).